CN112962601B - Static pressure pile loading device - Google Patents
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- CN112962601B CN112962601B CN202110202677.3A CN202110202677A CN112962601B CN 112962601 B CN112962601 B CN 112962601B CN 202110202677 A CN202110202677 A CN 202110202677A CN 112962601 B CN112962601 B CN 112962601B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/20—Placing by pressure or pulling power
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Abstract
The invention provides a static pile loading device which comprises a first connecting piece, a second connecting piece and a third connecting piece, wherein the first connecting piece is connected with the second connecting piece; the first connecting piece is used for being connected with an original building, a loading beam is arranged at the top of the first connecting piece, and a loading rope is arranged at the bottom of the first connecting piece; a jacking piece is arranged below the loading beam, abuts against the lower surface of the loading beam and is used for being placed on the steel pipe; the top end of the loading rope is connected with the loading beam. Utilize former building to provide sufficient holding power for the jacking piece, overall structure is simple, easily arranges, need not to use large-scale static pressure stake equipment to can not produce noise and vibration. When later stage is examining pile foundation bearing capacity, still can directly utilize the jacking piece to accomplish, need not stack counter weight, labour saving and time saving.
Description
Technical Field
The invention relates to the field of pile foundation construction, in particular to a static pressure pile loading device.
Background
The steel pipe pile is a pile foundation formed by driving or static pressing a steel pipe into a foundation soil layer and then pouring fine aggregate concrete into the steel pipe. When the existing building is transformed, a construction party often selects to bury the steel pipe piles in the foundation soil layer to reinforce the existing building.
Due to the limitation of the field size of a construction site and an original building structure, large static pressure pile equipment cannot be used in the field. Therefore, in the existing construction process, the steel pipe is driven into the foundation soil layer by the construction method basically.
However, the hammering construction can produce noise and vibration, and the later stage need adopt the mode of stacking the counter weight when detecting the pile foundation bearing capacity, wastes time and energy.
Disclosure of Invention
The invention aims to solve the problems that large static pressure pile equipment cannot be used in the prior art, noise and vibration are generated when a hammering method is adopted for construction, and time and labor are wasted.
The invention provides the following technical scheme:
a static pressure pile loading device is used for statically pressing a steel pipe into a foundation soil layer to reinforce an original building and comprises a first connecting piece;
the first connecting piece is used for being connected with the original building, a loading beam is arranged at the top of the first connecting piece, and a loading rope is arranged at the bottom of the first connecting piece;
a jacking piece is arranged below the loading beam, abuts against the lower surface of the loading beam and is used for being placed on the steel pipe;
the top end of the loading rope is connected with the loading beam.
As a further optional scheme of the static pile loading device, the top end of the loading rope is connected with one end, back to the first connecting piece, of the loading beam, and the jacking piece abuts against the middle of the lower surface of the loading beam.
As a further alternative to the static pile loading device, the loading beam is rotationally connected to the first connecting member by a second connecting member, and the rotation axis of the loading beam is vertical.
As a further optional scheme for the static pressure pile loading device, the second connecting piece includes a screw rod, the screw rod is arranged in the vertical direction, a first threaded cylinder and a second threaded cylinder are sleeved on the screw rod, the first threaded cylinder is not in direct contact with the second threaded cylinder, the first threaded cylinder is fixedly connected with the loading beam, and the second threaded cylinder is fixedly connected with the first connecting piece.
As a further alternative to the static pile loading device, the loading beam is rotatably disposed at an external corner of the original building through the second connecting member and the first connecting member.
As a further optional scheme of the static pressure pile loading device, the first connecting piece is a connecting angle steel, the connecting angle steel is buckled at the external corner, and the connecting angle steel is fixedly connected with the original building through a connecting bolt.
As a further optional scheme for the static pressure pile loading device, a sleeve is fixedly arranged at the bottom of the first connecting piece, the loading rope is arranged in the sleeve in a penetrating manner, and a limiting piece is connected to the bottom end of the loading rope.
As a further optional scheme of the static pressure pile loading device, the limiting member includes clamping plates arranged in pairs, the two clamping plates are connected through a clamping bolt, a clamping nut is sleeved on the clamping bolt, and the loading rope is clamped between the two clamping plates.
As a further alternative to the static pile loading device, the bottom end of the loading rope is connected with the first connecting piece through a turnbuckle.
As a further optional scheme of the static pile loading device, a loading matching block is arranged between the jacking piece and the loading beam.
The embodiment of the invention has the following beneficial effects:
during the use, constructor fixes first connecting piece on former building earlier, then with first connecting piece, loading roof beam and loading rope interconnect, places the jacking piece on the steel pipe again to offset with the lower surface of loading roof beam. The constructor controls the jacking piece to eject out, downward pressure is applied to the steel pipe, and the reaction force applied to the jacking piece by the steel pipe is vertically upward. At the moment, the loading beam presses the upper part of the jacking piece to support the jacking piece, so that the jacking piece can output enough pressure to the steel pipe until the steel pipe is pressed into the foundation soil layer by static pressure.
After the loading beam receives upward pressure from the jacking piece, one part of pressure is directly transmitted to the first connecting piece, and the other part of pressure is indirectly transmitted to the first connecting piece through the loading rope, and then is transmitted to the original building through the first connecting piece. Finally, utilize former building to provide sufficient holding power for the jacking piece, overall structure is simple, easily arranges, need not to use large-scale static pressure stake equipment to can not produce noise and vibration. When later stage is examining pile foundation bearing capacity, still can directly utilize the jacking piece to accomplish, need not stack counter weight, labour saving and time saving.
In addition, due to the existence of the loading rope, the first connecting piece, the loading beam, the loading rope and the jacking piece form a lever structure, the loading beam is used as a lever, and the jacking piece is used as a fulcrum of the lever. At the moment, the pressure applied to the loading beam by the jacking piece is divided into two parts and transmitted to the first connecting piece, the characteristic that the loading rope can bear tensile force is fully utilized, the stress at the joint of the loading beam and the first connecting piece is effectively reduced, the deformation or cracking of the joint of the loading beam and the first connecting piece is avoided, the upper bearing limit of the loading beam is improved in a phase-changing manner, and the structural strength of the whole static pressure pile loading device is enhanced.
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible and comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic diagram illustrating an overall structure of a static pile loading device according to an embodiment of the present invention;
FIG. 2 shows an enlarged schematic view at A in FIG. 1;
fig. 3 is a schematic diagram illustrating a stress analysis of a loading beam in a static pile loading device according to an embodiment of the present invention;
fig. 4 is a top view of a static pile loading device according to an embodiment of the present invention;
FIG. 5 shows an enlarged schematic view at B in FIG. 4;
fig. 6 is a schematic diagram illustrating a connection relationship between a loading rope and a first connecting member in a static pile loading device according to an embodiment of the present invention;
fig. 7 shows a schematic structural diagram of a limiting member in a static pile loading device according to an embodiment of the present invention.
Description of the main element symbols:
100-a first connector; 110-connecting bolts; 120-a sleeve; 200-a load beam; 210-a via; 300-a loading rope; 400-a jacking piece; 410-load matching block; 500-a second connector; 510-a screw; 520-a first threaded barrel; 521-a connecting plate; 530-a second threaded cylinder; 600-a stop; 610-clamping plate; 620-clamping bolt; 630-a clamping nut; 700-steel pipe; 800-original building.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the templates herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Examples
Referring to fig. 1 to 7, the present embodiment provides a static pressure pile loading device (hereinafter, referred to as "the device") for static pressing a steel pipe 700 into a foundation soil layer to further form a steel pipe 700 pile for reinforcing an original building 800. The device comprises a first connecting piece 100, a loading beam 200, a loading rope 300 and a jacking piece 400, wherein the jacking piece 400 applies downward pressure to a steel pipe 700, and the first connecting piece 100, the loading beam 200 and the loading rope 300 support the jacking piece 400 by means of an original building 800.
The first connecting member 100 is disposed along a vertical direction, a plurality of connecting bolts 110 penetrate through the first connecting member 100, and the connecting bolts 110 are uniformly arranged along the vertical direction. The connecting bolt 110 is vertically driven into the wall surface of the original building 800 or the side of the column of the original building 800, and the first connecting member 100 is fixed on the original building 800.
The load beam 200 is made of i-steel and is disposed in a horizontal direction. One end of the load beam 200 facing the original building 800 is connected to the top of the first connecting member 100, and the other end of the load beam 200 is provided with a through hole 210. The axis of the through-hole 210 is horizontal and perpendicular to the length direction of the load beam 200.
The loading rope 300 is a steel cable, the top end of the loading rope 300 passes through the through hole 210 and is tied to the loading beam 200, and the bottom end of the loading rope 300 is connected to the bottom of the first connecting member 100.
The jacking piece 400 is a jack, and is placed on the top end face of the steel pipe 700 when in use and abuts against the middle of the lower surface of the loading beam 200.
When the steel pipe jacking device is used, a constructor fixes the first connecting piece 100 on the original building 800, then connects the first connecting piece 100, the loading beam 200 and the loading rope 300 with each other, and then places the jacking piece 400 on the end face of the top end of the steel pipe 700 and abuts against the lower surface of the loading beam 200. The constructor controls the jacking piece 400 to eject, applies downward pressure to the steel pipe 700, and the reaction force applied to the jacking piece 400 by the steel pipe 700 is vertically upward. At this time, the loading beam 200 presses on the jacking piece 400 to support the jacking piece 400, so that the jacking piece 400 can output enough pressure to the steel pipe 700 until the steel pipe 700 is pressed into the foundation soil layer by static pressure.
After the load beam 200 receives the upward pressure from the jacking member 400, a part of the pressure is directly transmitted to the top of the first connecting member 100, and the rest of the pressure is indirectly transmitted to the bottom of the first connecting member 100 through the load rope 300, and then transmitted to the original building 800 through the first connecting member 100.
Specifically, the force analysis of the load beam 200 is as follows: the jack 400 applies a vertical upward pressure F to the load beam 200, and the first link 100 applies a horizontal supporting force N and a vertical downward supporting force F to the load beam 2001The load line 300 applies a downward inclined pulling force F to the load beam 2002. Wherein, F2Decomposable into F in vertical direction21And F in the horizontal direction22。F21And F1Superposition, offsetting F, F22The N and N are mutually offset, so that the load beam 200 reaches a stress balance state.
Finally, the original building 800 is utilized to provide enough supporting force for the jacking piece 400, the whole structure is simple, the arrangement is easy, large static pressure pile equipment is not needed, and noise and vibration cannot be generated. When later stage is examining pile foundation bearing capacity, still can directly utilize jacking piece 400 to accomplish, need not stack the counter weight, labour saving and time saving.
In addition, due to the presence of the load line 300, the first connecting member 100, the load beam 200, the load line 300 and the jack 400 form a lever structure, with the load beam 200 as a lever and the jack 400 as a fulcrum of the lever. The lever structure can disperse the acting force between the jacking piece 400 and the loading beam 200 to the two ends of the loading beam 200, and the acting force is divided into two parts to be transmitted to the first connecting piece 100. The characteristic that the loading rope 300 can bear tensile force is fully utilized, the stress at the joint of the loading beam 200 and the first connecting piece 100 is effectively reduced, the joint of the loading beam 200 and the first connecting piece 100 is prevented from being deformed or cracked, the upper bearing limit of the loading beam 200 is improved in a phase-changing manner, and the overall structural strength of the device is enhanced.
Further, there are often a plurality of steel pipe 700 piles arranged around the original building 800, and in order to enable the present device to sequentially press the plurality of steel pipes 700 into the foundation soil layer, in this embodiment, the load beam 200 is rotatably connected to the first connecting member 100 through the second connecting member 500, and the rotation axis of the load beam 200 is vertical.
After the constructor presses one of the steel pipes 700 into the foundation soil layer, the jacking piece 400 is transferred to the top end of the other steel pipe 700, and then the load beam 200 is rotated to press the load beam 200 on the jacking piece 400 again. Meanwhile, the flexible loading rope 300 is also shifted along with the loading beam 200, and constructors can use the device to press the steel pipe 700 into the foundation soil layer.
In the process, the constructor does not need to dismount the device and then remount the device, and does not need to repeatedly nail the connecting bolt 110 into different positions on the original building 800, so that the time and the energy are greatly saved, and the efficiency of pressing the steel pipe 700 is effectively improved.
Specifically, the second connector 500 is composed of a screw 510, a first threaded cylinder 520, and a second threaded cylinder 530. Wherein the screw 510 is disposed in a vertical direction.
The first threaded cylinder 520 is sleeved in the middle of the screw 510 and is in threaded fit with the screw 510, and a connecting plate 521 is welded or integrally formed on the outer side wall of the first threaded cylinder 520. The connecting plate 521 is parallel to the axis of the first threaded cylinder 520 and is attached to the web of the load beam 200, and the connecting plate 521 is bolted and fixed to the web of the load beam 200, so that the mounting and dismounting are facilitated.
The second thread cylinders 530 are arranged at two ends of the first thread cylinder 520 in pairs, and the two second thread cylinders 530 are sleeved on the screw 510 and are in thread fit with the screw 510. In addition, the two second threaded cylinders 530 are welded and fixed to the first connector 100.
In the vertical direction, the first threaded cylinder 520 cannot translate relative to the screw 510, nor can the screw 510 translate relative to the second threaded cylinder 530. Therefore, the vertical pressure applied to the load beam 200 by the jack 400 can be smoothly transmitted to the first connecting member 100. At the same time, the first threaded cylinder 520 can be rotated with respect to the threaded rod 510, and the threaded rod 510 can be rotated with respect to the second threaded cylinder 530, thereby achieving the rotational connection between the load beam 200 and the first link 100.
During the rotation of the load beam 200 relative to the first connector 100, if the first screw cylinder 520 and the screw 510 rotate relatively, the first screw cylinder 520 and the screw 510 move relatively in the vertical direction, and if the screw 510 and the second screw cylinder 530 rotate relatively, the screw 510 and the second screw cylinder 530 move relatively in the vertical direction.
In summary, the distance between the first threaded cylinder 520 and the second threaded cylinder 530 may vary. In order to avoid the first threaded cylinder 520 from being jammed, in the present embodiment, a gap with a length of 10mm is reserved between the first threaded cylinder 520 and the second threaded cylinder 530 to ensure that the first threaded cylinder 520 does not contact the second threaded cylinder 530 at all times.
Further, in order to expand the rotation range of the load beam 200, the first connector 100 is disposed at an external corner of the original building 800, such as an external corner of a wall, an external corner of a column, etc. Accordingly, the first connecting member 100 employs a connecting angle. The angle iron is equal-edge angle iron, and two wings of the angle iron are tightly attached to two surfaces of the external corner and fixed at the external corner through the connecting bolt 110.
At this time, the load beam 200 is rotatably disposed at the external corner through the second connector 500 and the first connector 100, the rotation range of the load beam 200 is close to 270 °, and more steel pipes 700 can be statically pressed into the foundation soil layer.
Further, the loading rope 300 is difficult to be directly fixed at the bottom of the first connecting element 100 by welding, so the sleeve 120 is disposed at the bottom of the first connecting element 100, and the loading rope 300 is inserted into the sleeve 120 and connected to the stopper 600.
Specifically, the sleeve 120 is disposed in a vertical direction and is welded and fixed to the first connector 100. The bottom end of the loading string 300 passes through the sleeve 120 from the top down and then is connected to the stopper 600. The maximum length of the stopper 600 in the horizontal direction is larger than the inner diameter of the sleeve 120, and cannot pass through the sleeve 120.
When the loading rope 300 is tightened, the retainer 600 is pressed against the bottom end surface of the sleeve 120, so that the bottom end of the loading rope 300 is fixed relative to the first connecting member 100.
When the jacking piece 400 applies upward pressure to the load beam 200, the load beam 200 is deformed to a small extent. The end of the load beam 200 facing away from the first connector 100 moves upward to allow the load line 300 to be tensioned, so that force can be transferred through the load line 300. To ensure that the load line 300 can share enough pressure, it is necessary to place the load line 300 in tension before the hydrostatic steel tube 700. When the device is to be attached and detached, the loading rope 300 needs to be loosened.
In order to adjust the tightness of the loading rope 300, in the present embodiment, the stopper 600 is composed of a clamping plate 610, a clamping bolt 620, and a clamping nut 630. Wherein cleats 610 are arranged in pairs to sandwich load line 300. The clamping bolts 620 are inserted through the two clamping plates 610 and are disposed on two sides of the loading rope 300 in pairs. The clamping nut 630 is sleeved on the corresponding clamping bolt 620, and the head of the clamping bolt 620 is respectively abutted against the opposite sides of the two clamping plates 610.
Clamping nut 630 is tightened to draw clamp plates 610 toward each other and clamp load line 300, thereby frictionally securing load line 300 thereto. When the tightness of the loading rope 300 needs to be adjusted, a constructor unscrews the clamping nut 630 to release the loading rope 300, then adjusts the tension on the loading rope 300 by using an anchor cable tensioning tool and other devices, closes the clamp plate 610, and enables the clamp plate 610 to abut against the bottom end face of the sleeve 120, so that the loading rope 300 is kept under the tension.
Further, the opposite sides of the two clamping plates 610 are provided with grooves. The cross section of the groove is arc-shaped, so that the contact area between the splint 610 and the loading rope 300 is increased, and the splint 610 and the loading rope 300 can be better stressed.
In another embodiment of the present application, the bottom end of the loading line 300 may be connected to the first connector 100 by a turn buckle.
Specifically, a hanging ring is welded at the bottom of the first connecting member 100, a hook at the bottom end of the turn buckle hooks the hanging ring, and the bottom end of the loading rope 300 is tied to the hanging ring at the top end of the turn buckle.
The use of the turn buckle not only allows the loading rope 300 to be smoothly connected to the first connecting member 100, but also allows the tightness of the loading rope 300 to be conveniently and quickly adjusted.
Further, the depth of the steel pipe 700 pressed into the foundation soil layer is often large, exceeding the stroke of the jack 400. Accordingly, a load counter block 410 is provided between the jacking members 400 and the load beam 200. As the steel pipe 700 gradually penetrates into the foundation soil layer, the loading matching block 410 is continuously placed between the jacking piece 400 and the loading beam 200, the jacking piece 400 abuts against the lower surface of the loading beam 200 through the loading matching block 410, and the loading beam 200 always supports the jacking piece 400.
In all examples shown and described herein, any particular value should be construed as merely exemplary, and not as a limitation, and thus other examples of example embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The above examples are merely illustrative of several embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (7)
1. The static pressure pile loading device is characterized by being used for statically pressing a steel pipe into a foundation soil layer to reinforce an original building, and comprising a first connecting piece;
the first connecting piece is used for being connected with the original building, a loading beam is arranged at the top of the first connecting piece, and a loading rope is arranged at the bottom of the first connecting piece;
a jacking piece is arranged below the loading beam, abuts against the lower surface of the loading beam and is used for being placed on the steel pipe;
the top end of the loading rope is connected with one end, back to the first connecting piece, of the loading beam, and the jacking piece abuts against the middle of the lower surface of the loading beam;
the loading beam is rotationally connected with the first connecting piece through a second connecting piece, and the rotating axis of the loading beam is vertical;
the second connecting piece comprises a screw rod, the screw rod is arranged along the vertical direction, a first thread cylinder and a second thread cylinder are sleeved on the screw rod, the first thread cylinder is not in direct contact with the second thread cylinder, the first thread cylinder is fixedly connected with the loading beam, and the second thread cylinder is fixedly connected with the first connecting piece.
2. The static pile loading device according to claim 1, wherein the loading beam is rotatably arranged at an external corner of the original building through the second connecting piece and the first connecting piece.
3. The static pile loading device according to claim 2, wherein the first connecting piece is a connecting angle steel, the connecting angle steel is buckled at the external corner, and the connecting angle steel is fixedly connected with the original building through a connecting bolt.
4. The static pile loading device according to claim 1, wherein a sleeve is fixedly arranged at the bottom of the first connecting piece, the loading rope is arranged in the sleeve in a penetrating manner, and a limiting piece is connected to the bottom end of the loading rope.
5. The static pile loading device according to claim 4, wherein the limiting member comprises a pair of clamping plates, the two clamping plates are connected through a clamping bolt, a clamping nut is sleeved on the clamping bolt, and the loading rope is clamped between the two clamping plates.
6. The hydrostatic pile loading device of claim 1, wherein the bottom end of the loading rope is connected to the first connector by a turnbuckle.
7. The hydrostatic pile loading device of claim 1, wherein a loading counter block is disposed between the jacking member and the loading beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110202677.3A CN112962601B (en) | 2021-02-23 | 2021-02-23 | Static pressure pile loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110202677.3A CN112962601B (en) | 2021-02-23 | 2021-02-23 | Static pressure pile loading device |
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| Publication Number | Publication Date |
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| CN112962601A CN112962601A (en) | 2021-06-15 |
| CN112962601B true CN112962601B (en) | 2022-05-03 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0525236D0 (en) * | 2005-12-12 | 2006-01-18 | Terrain Geotechnical Consultan | A pile test apparatus |
| CN103643702A (en) * | 2013-12-11 | 2014-03-19 | 中铁大桥局集团第二工程有限公司 | Loading structure for static load test of driven pile foundation and construction method thereof |
| CN111287184A (en) * | 2020-03-30 | 2020-06-16 | 悉地国际设计顾问（深圳）有限公司 | Pile pressing device and method |
| CN212104115U (en) * | 2020-03-31 | 2020-12-08 | 江苏东合南岩土科技股份有限公司 | Foundation pit supporting system |
| CN212248242U (en) * | 2020-03-30 | 2020-12-29 | 悉地国际设计顾问（深圳）有限公司 | Pile pressing device |
-
2021
- 2021-02-23 CN CN202110202677.3A patent/CN112962601B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0525236D0 (en) * | 2005-12-12 | 2006-01-18 | Terrain Geotechnical Consultan | A pile test apparatus |
| CN103643702A (en) * | 2013-12-11 | 2014-03-19 | 中铁大桥局集团第二工程有限公司 | Loading structure for static load test of driven pile foundation and construction method thereof |
| CN111287184A (en) * | 2020-03-30 | 2020-06-16 | 悉地国际设计顾问（深圳）有限公司 | Pile pressing device and method |
| CN212248242U (en) * | 2020-03-30 | 2020-12-29 | 悉地国际设计顾问（深圳）有限公司 | Pile pressing device |
| CN212104115U (en) * | 2020-03-31 | 2020-12-08 | 江苏东合南岩土科技股份有限公司 | Foundation pit supporting system |
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| CN112962601A (en) | 2021-06-15 |
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